80356565 has 8 divisors (see below), whose sum is σ = 96933888. Its totient is φ = 63947920.

The previous prime is 80356553. The next prime is 80356589. The reversal of 80356565 is 56565308.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-80356565 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41117 + ... + 43026.

It is an arithmetic number, because the mean of its divisors is an integer number (12116736).

Almost surely, 2^80356565 is an apocalyptic number.

It is an amenable number.

80356565 is a deficient number, since it is larger than the sum of its proper divisors (16577323).

80356565 is a wasteful number, since it uses less digits than its factorization.

80356565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84339.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 80356565 is about 8964.1823386185. The cubic root of 80356565 is about 431.5261526095.

The spelling of 80356565 in words is "eighty million, three hundred fifty-six thousand, five hundred sixty-five".